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© Semiconductor Components Industries, LLC, 2011
October, 2011 − Rev. 10
1 Publication Order Number:
CAT5115/D
CAT5115
32-Tap Digitally Program-
mable Potentiometer (DPP)
Description
The CAT5115 is a single digitally programmable potentiometer
(DPP) designed as an electronic replacement for mechanical
potentiometers and trim pots. Ideal for automated adjustments on high
volume production lines, they are also well suited for applications
where equipment requiring periodic adjustment is either difficult to
access or located in a hazardous or remote environment.
The CAT5115 contains a 32−tap series resistor array connected
between two terminals R
H
and R
L
. An up/down counter and decoder
that are controlled by three input pins, determines which tap is
connected to the wiper, R
W
. The wiper is always set to the mid point,
tap 15 at power up. The tap position is not stored in memory.
Wiper−control of the CAT5115 is accomplished with three input
control pins, CS, U/D, and INC. The INC input increments the wiper
in the direction which is determined by the logic state of the U/D input.
The CS input is used to select the device.
The digitally programmable potentiometer can be used as a
three−terminal resistive divider or as a two−terminal variable resistor.
DPPs bring variability and programmability to a wide variety of
applications including control, parameter adjustments, and signal
processing.
For a pin−compatible device that recalls a stored tap position on
power−up refer to the CAT5114 data sheet.
Features
• 32−position Linear Taper Potentiometer
• Low Power CMOS Technology
• Single Supply Operation: 2.5 V − 6.0 V
• Increment Up/Down Serial Interface
• Resistance Values: 10 kW, 50 kW and 100 kW
• Available in PDIP, SOIC, TSSOP, MSOP and Space Saving
2 x 2.5 mm TDFN Packages
• These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
Compliant
Applications
• Automated Product Calibration
• Remote Control Adjustments
• Offset, Gain and Zero Control
• Tamper−proof Calibrations
• Contrast, Brightness and Volume Controls
• Motor Controls and Feedback Systems
• Programmable Analog Functions
http://onsemi.com
PIN CONFIGURATIONS
R
H
R
WB
R
L
U/D
INC
V
CC
CS
1
See detailed ordering and shipping information in the package
dimensions section on page 13 of this data sheet.
ORDERING INFORMATION
SOIC−8
V SUFFIX
CASE 751BD
MSOP−8
Z SUFFIX
CASE 846AD
GND
PDIP (L), SOIC (V),
MSOP (Z)
PDIP−8
L SUFFIX
CASE 646AA
TSSOP−8
Y SUFFIX
CASE 948AL
TSSOP (Y)
(Top Views)
GND
R
H
U/D
INC
R
WB
CS
V
CC
R
L
1
TDFN−8
ZD7 SUFFIX
CASE 511AJ
TDFN (ZD7)
GND
R
H
U/D
INC
R
WB
CS
V
CC
R
L
1
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